Sakura Wars: So Long, My Love for PlayStation 2 Reviews by Gamers

Not sure if this should classify as an RPG (since there are no user-controlled stats, no inventory or significant skills). Basically, this game is a hybrid between a 'dating game' (in which you frequently are presented options when talking to potential companions, and depending on the responses you get closer or farther in your relationship with them) and a turn based tactical game.
Whatever this classifies as, it is a fun game. Basically, gameplay consists of going to different places in the city, talking to your companions, building relationships with them, and depending on these relationships, their stats during combat are better or worse.
Actual battles are tactical turn based. You move your 'mechs' around using a number of action points, and attack with normal or special attacks (if you have enough action points left). Battles are challenging, but not overwhelming, and since they are fixed in number (and directly related to the story), you should be able to beat them (as opposed to most traditional RPGs that depend a lot on your 'grinding').
The story is good enough, nothing spectacular but serves well as a background for the game.
At the end of the game, you get to select which companion you will have the ending with (among those with high enough relationship points with you, gained through your interactions with them in and out of battle).
It's not a long game, you can beat it the first time in 25 hours or so, and play it again to see other endings in a lot less time (since you can quickly skip conversations you already saw in previous plays).